The 1997 group of forest fires in Indonesia that lasted well into 1998 were probably among the two or three, if not the largest, forest fires group in the last two centuries of recorded history. In the middle of 1997 forest fires burning in Indonesia began to affect neighbouring countries, spreading thick clouds of smoke and haze to Malaysia and Singapore. A total of 240 people perished in the wildfires.
The 1815 eruption of Mount Tambora was the most powerful in human recorded history, with a Volcanic Explosivity Index (VEI) of 7. Although its eruption reached a violent climax on 10 April 1815, increased steaming and small phreatic eruptions occurred during the next six months to three years. Tanguy pointed out that there may have been additional victims on Bali and East Java because of famine and disease. Their estimate was 11,000 Oppenheimer wrote that there were at least 71,000 deaths in total. Reid has estimated that 100,000 people on Sumbawa, Bali, and other locations died from the direct and indirect effects of the eruption.
The 1883 eruption of Krakatoa (Indonesian: Krakatau ) in the Sunda Strait began on the afternoon of Sunday, 26 August 1883, and peaked on the late morning of Monday, 27 August 1883, when over 70% of the island of Krakatoa and its surrounding archipelago were destroyed as it collapsed into a caldera. At least 36,417 deaths are attributed to the eruption and the tsunamis it created.
In 1923–1924, Joseph had been an Honorary British Consul in Semarang in the Dutch East Indies, and prior to his marriage to Hepburn's mother, he had been married to Cornelia Bisschop, a Dutch heiress.
The Dutch East Indies campaign of 1941–1942 was the conquest of the Dutch East Indies (present-day Indonesia) by forces from the Empire of Japan. Forces from the Allies attempted unsuccessfully to defend the islands. The East Indies were targeted by the Japanese for their rich oil resources which would become a vital asset during the war.
By 22 July 1966, the Malaysian Prime Minister Tunku Abdul Rahman estimated that there were approximately 700 Communists in Indonesian Kalimantan and about 2,000 sympathisers.
On 25 March 1969, Indonesian forces eliminated the Third Branch of the SPGF at Songkong in West Kalimantan following a two-day battle, wiping out the Sarawak People's Guerrilla Force's largest corps.
To replace the decimated SPGF, the Sarawak Communist Organisation created the North Kalimantan People's Guerrilla Force at Nonok on 13 July 1969.
On 30 March 1970, Wen Ming Chyuan, the Head of the Sarawak People's Guerrillas in Sarawak's First Division, formed the North Kalimantan Communist Party.
The 1992 Flores earthquake and tsunami occurred on December 12 on the island of Flores in Indonesia. With a magnitude of 7.8 and a maximum Mercalli intensity of VIII (Severe). The quake hit at 13:29:26 WITA and was followed by several serious aftershocks. At least 2,500 people were killed or missing near Flores, including 1,490 at Maumere and 700 on Babi. More than 500 people were injured and 90,000 were left homeless. Nineteen people were killed and 130 houses were destroyed on Kalaotoa. Damage was assessed at exceeding US$100 million. Approximately 90% of the buildings were destroyed at Maumere, the hardest hit town, by the earthquake and ensuing tsunami while 50% to 80% of the structures on Flores were damaged or destroyed.
In June 1997, Indonesia seemed far from crisis. Unlike Thailand, Indonesia had low inflation, a trade surplus of more than $900 million, huge foreign exchange reserves of more than $20 billion, and a good banking sector. But a large number of Indonesian corporations had been borrowing in U.S. dollars. During the preceding years, as the rupiah had strengthened respective to the dollar, this practice had worked well for these corporations; their effective levels of debt and financing costs had decreased as the local currency's value rose.
In July 1997, when Thailand float the baht, Indonesia's monetary authorities widened the rupiah currency trading band from 8% to 12%. The rupiah suddenly came under severe attack in August.
On 14 August 1997, the managed floating exchange regime was replaced by a free-floating exchange rate arrangement. The rupiah dropped further. The IMF came forward with a rescue package of $23 billion, but the rupiah was sinking further amid fears over corporate debts, massive selling of rupiah, and strong demand for dollars.
Airbus A300B4-220, Garuda Indonesia Flight 152, which departed from Jakarta, Indonesia, and was preparing to land at Medan, North Sumatra, crashed into mountainous terrain, killing 222 passengers and 12 crew members. The causes included turning left instead of right as instructed by the ATC and descending below the assigned altitude of 2,000 feet due to pilot error.
In February 1998, President Suharto sacked Bank Indonesia Governor J. Soedradjad Djiwandono, but this proved insufficient. Amidst widespread rioting in May 1998, Suharto resigned under public pressure and Vice President B. J. Habibie replaced him.
The 2004 Indian Ocean earthquake and tsunami (also known as the Boxing Day Tsunami) occurred at 00:58:53 UTC on 26 December, with an epicentre off the west coast of northern Sumatra, Indonesia. It was an undersea megathrust earthquake that registered a magnitude of 9.1–9.3 Mw, reaching a Mercalli intensity up to IX in certain areas. Communities along the surrounding coasts of the Indian Ocean were seriously affected, and the tsunamis killed an estimated 227,898 people in 14 countries.
The 2006 Yogyakarta earthquake (also known as the Bantul earthquake) occurred at 05:54 local time on 27 May with a moment magnitude of 6.4 and a maximum MSK intensity of VIII (Damaging). Several factors led to a disproportionate amount of damage and number of casualties for the size of the shock, with more than 5,700 dead, tens of thousands injured, and financial losses of Rp 29.1 trillion ($3.1 billion).
On 28 September 2018, a shallow, large earthquake struck in the neck of the Minahasa Peninsula, Indonesia, with its epicentre located in the mountainous Donggala Regency, Central Sulawesi. The magnitude 7.5 quake was located 70 km (43 mi) away from the provincial capital Palu and was felt as far away as Samarinda on East Kalimantan and also in Tawau, Malaysia. The combined effects of the earthquake and tsunami led to the deaths of an estimated 4,340 people.